Nishizawa, T.; Akaoka, I.; Nishida, Y.; Kawaguchi, Y.; Hayashi, E. (October 1976). "Some factors related to obesity in the Japanese sumo wrestler". The American Journal of Clinical Nutrition. 29 (10): 1167–1174. doi:10.1093/ajcn/29.10.1167. PMID973605.
Nishizawa, T.; Akaoka, I.; Nishida, Y.; Kawaguchi, Y.; Hayashi, E. (October 1976). "Some factors related to obesity in the Japanese sumo wrestler". The American Journal of Clinical Nutrition. 29 (10): 1167–1174. doi:10.1093/ajcn/29.10.1167. PMID973605.